Experience unmatched comfort and performance with our Fly Racing Lightweight Base Layer Top. Featuring High-IQ™ technology, moisture is wicked away for quick drying. The flat-lock stitch construction and multi-directional stretch fabric offer unrestricted movement, while the open fabric structure provides lightweight warmth and UPF 40+ sun protection. Stay cool, dry, and protected all day long! Features: High-IQ™ Advanced Evaporation Technology – fast wicking hollow-core fibers transport moisture to the outer surface to dry quickly Flat-lock stitch seam construction Multi-direction stretch fabric allows for un-restricted range of motion Open fabric structure offers lightweight warmth and all day comfort UPF 40+ sun protection Polygiene® odor Control Technology Ergonomic panels are form fitting (non-compression)